apache 自带的ab.exe 测试网站的并发量(网站压力测试)

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AB(ApacheBench) 是 Apache 自带的超文本传输协议 (HTTP) 性能测试工具。其设计意图是描绘当前所安装的 Apache 的执行性能，主要是显示 Apache 每秒可以处理多少个请求。

该工具是 Apache 自带的工具。安装了 Apache Http Server ，就有了 ab.exe 程序。

安装完后，在 apache 的 Bin 目录下有 ab.exe 程序。这个就是我们的 AB 工具。

AB 工具的使用方法：

C: >cd C:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin

C:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin>ab

ab: wrong number of arguments

Usage: ab [options] [http://]hostname[:port]/path

Options are:

-n requests Number of requests to perform

-c concurrency Number of multiple requests to make

-t timelimit Seconds to max. wait for responses

-b windowsize Size of TCP send/receive buffer, in bytes

-p postfile File containing data to POST. Remember also to set -T

-u putfile File containing data to PUT. Remember also to set -T

-T content-type Content-type header for POSTing, eg.

'application/x-www-form-urlencoded'

Default is 'text/plain'

-v verbosity How much troubleshooting info to print

-w Print out results in HTML tables

-i Use HEAD instead of GET

-x attributes String to insert as table attributes

-y attributes String to insert as tr attributes

-z attributes String to insert as td or th attributes

-C attribute Add cookie, eg. 'Apache=1234. (repeatable)

-H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip'

Inserted after all normal header lines. (repeatable)

-A attribute Add Basic WWW Authentication, the attributes

are a colon separated username and password.

-P attribute Add Basic Proxy Authentication, the attributes

are a colon separated username and password.

-X proxy:port Proxyserver and port number to use

-V Print version number and exit

-k Use HTTP KeepAlive feature

-d Do not show percentiles served table.

-S Do not show confidence estimators and warnings.

-g filename Output collected data to gnuplot format file.

-e filename Output CSV file with percentages served

-r Don't exit on socket receive errors.

-h Display usage information (this message)

C:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin>

示例：

C:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin>ab -n 1000 -c 50 http://blog.csdn.net/tianlesoftware/archive/2010/05/25/5622268.aspx

-- 注意，这里要写一个具体的页面

This is ApacheBench, Version 2.3 <$Revision: 655654 $>

Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking blog.csdn.net (be patient)

Completed 100 requests

Completed 200 requests

Completed 300 requests

Completed 400 requests

Completed 500 requests

Completed 600 requests

Completed 700 requests

Completed 800 requests

Completed 900 requests

Completed 1000 requests

Finished 1000 requests

Server Software: nginx/0.7.65

Server Hostname: blog.csdn.net

Server Port: 80

Document Path: /tianlesoftware/archive/2010/05/25/5622268.aspx -- 请求资源

Document Length: 169 bytes -- 文档返回的长度，不包括相应头

Concurrency Level: 50 -- 并发个数

Time taken for tests: 118.549 seconds -- 请求消耗总时间

Complete requests: 1000 -- 总请求数

Failed requests: 1

(Connect: 1, Receive: 0, Length: 0, Exceptions: 0)

Write errors: 0

Non-2xx responses: 1000

Total transferred: 334000 bytes

HTML transferred: 169000 bytes

Requests per second: 8.44 [#/sec] (mean) -- 平均每秒请求数

Time per request: 5927.439 [ms] (mean) -- 平均每个请求时间

Time per request: 118.549 [ms] (mean, across all concurrent requests)

-- 平均每个请求时间除以并发数，这里是 5927.439/50

Transfer rate: 2.75 [Kbytes/sec] received -- 时间传输速率

Connection Times (ms)

min mean[+/-sd] median max

Connect: 47 97 72.8 63 742

Processing: 57 5720 4597.9 4666 25381

Waiting: 54 2711 3312.5 2128 25176

Total: 112 5817 4595.1 4754 25435

Percentage of the requests served within a certain time (ms)

50% 4754 --

66% 5491

75% 6005

80% 6274

90% 7366

95% 8697

98% 25232

99% 25415

100% 25435 (longest request)

C:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin>

含义：同时处理 50 个并发请求并运行 1000 次 :

/tianlesoftware/archive/2010/05/25/5622268.aspx

结果：在并发 50 个请求的情况下，完成 1000 次的访问请求，共花了 118.549 秒，这个程序每秒可处理 8.44 个请求。

1，使用ab，发送post数据：

apachebench网上的资料很多
但是甚至包括国外的文章以及官方文档
出了help显示的内容之外就没有任何一丁点更详细些的内容了
要使用ab进行post数据测试.从help可以看出我们需要定义两个内容
一个是-p参数.指定需要post的数据
还有一个是-T参数,指定使用的content-type
我在服务器端简单的写了一个脚本.将获取到的post请求输出到文件

<?php
echo $_REQUEST['test'];
$file=fopen('/data/www/log.txt','a+');
fwrite($file,date("Y-m-d H:i:s"));
fwrite($file,$_REQUEST['test']);
fclose($file);
?>

然后在本地生成post.txt文件
内容为test=abc
使用ab进行测试
ab -n 1 -p post.txt http://192.168.0.2/test.php
发现服务器端接受到了请求,但是没有受到post的数据
使用类型之后.也还是不行
ab -n 1 -p post.txt -T ‘text/html’ http://192.168.0.2/test.php
使用get方式测试
ab -n 1 http://192.168.0.2/test.php?test=abc
服务器端则可以正常工作
和开始说的一样.翻烂了google也没有找到
最后只能用wireshark抓包
最后发现content-type一定要设置成为
application/x-www-form-urlencoded
最后如下测试.才最后通过
ab -n 1 -p post.txt -T ‘application/x-www-form-urlencoded’ http://192.168.0.2/test.php
还有postfile
如果有多条记录
内容可以写成
test1=a&test2=b
类似这样即可
这个也是文档中没有提及的,让我一开始以为postfile的格式有误.
网上有提到过一种格式
test1=a
test2=b
这种是不对的
这样的ab会把整个
a回车test2=b
当作test1这个field传送出去